<script type="text/javascript" src="/ajaxpro/prototype.ashx"></script>
 <script type="text/javascript" src="/ajaxpro/core.ashx"></script>
 <script type="text/javascript" src="/ajaxpro/converter.ashx"></script>
 <script type="text/javascript" src="/ajaxpro/WebApplication.StudentsInfo,WebApplication.ashx"></script>
 <script type="text/javascript" src="/ajaxpro/WebApplication.Grad,WebApplication.ashx"></script>
 <script type="text/javascript" 
src="/ajaxpro/WebApplication.NewFolder.HelloAjaxNet,WebApplication.ashx"></script>
 <script type="text/javascript" src="/ajaxpro/WebApplication.DataEntity,WebApplication.ashx"></script>

public string ServerProcerMethod(string stu)
     {
       //System.Web.Script.Serialization.JavaScriptSerializer jsSerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
       //StuInfo s= jsSerializer.Deserialize<StuInfo>(stu);
 
       System.Web.Script.Serialization.JavaScriptSerializer jsSerializer = new System.Web.Script.Serialization.JavaScriptSerializer();
       List<StuInfo> s = jsSerializer.Deserialize<List<StuInfo>>(stu);
       if (s != null && s.Count > )
       {
         StuInfo stu= s[];
         StringBuilder sb = new StringBuilder();
         jsSerializer.Serialize(stu, sb);
         return sb.ToString();
       }
       else
         return null;
     }

//javascript 字符串转json对象：
 var obj = JSON.parse(str);
 //javascript json 对象转字符串：
 JSON.stringify(obj);

<system.webServer>
   <directoryBrowse enabled="true"/>
   <handlers>
    <add verb="*" path="*.ashx" name="myhandler" type="AjaxPro.AjaxHandlerFactory,AjaxPro."/>
    <!--<add verb="POST,GET" path="ajax/*.ashx" name="myhandler" type="Ajax.PageHandlerFactory, Ajax" />-->
   </handlers>
  </system.webServer>

<script type="text/javascript" src="../jquery-easyui-../jquery.min.js"> </script>
   <link rel="stylesheet" type="text/css" href="../jquery-easyui-../themes/default/easyui.css" />
   <link rel="stylesheet" type="text/css" href="../jquery-easyui-../themes/icon.css" />
   <script type="text/javascript" src="../jquery-easyui-../jquery.easyui.min.js"></script>

 <div class="easyui-dialog" style="width:px;height:px"
   data-options="
     title:'My Dialog',
     iconCls:'icon-ok',
     onOpen:function(){}">
   dialog content.
 </div>
 <input id="cc" style="width:px" />
 $('#cc').combobox({
   url: ...,
   required: true,
   valueField: 'id',
   textField: 'text'
 });

 function bindDataToTb() {
       var keywordStr = $('#keyword').val();
       $('#studb').datagrid(
       {
         queryParams: { keyword: keywordStr },
         //url:"WebForm.aspx/BindData",
         toolbar: '#searchBar',
         pagination: true,
         pageNumber: ,
        singleSelect: true,
        pageSize: ,
        pageList: [, , ],
        loader: function (param, success, error) {
          var da = WebApplication.NewFolder.HelloAjaxNet.BindData(param.keyword, param.page, param.rows)
          if (da.value.rows == null) {
            success();
          }
          else
            success(da.value);
        },
        pagePosition: 'bottom',
        columns: [[
          { field: 'stuNo', title: 'Id', width: },
          { field: 'name', title: '名字', width: },
          { field: 'age', title: '年龄', width: },
          { field: 'loginName', title: '登录名', width: },
          { field: 'loginPwd', title: '密码', width: },
          { field: 'GradId', title: '班级Id', width: },
          { field: 'gradName', title: '班级', width: },
          {
            field: 'none', title: '操作', width: , formatter: function (value, row, index) {
              var btn = '<a class="editcls" href="#" onclick="delstuClick(' + row.stuNo + ')">删除</a>';
              return btn;
            }
          }
        ]]
      });
     }

//查询（带分页
     [AjaxPro.AjaxMethod]
     public static WebApplication.DataEntity BindData(string keyword, int page, int rows)
     {
       //, ref int pageIndex, out int totalPage
       if (keyword == null)
         keyword = "";
       int pageIndex = ;
       int pageSize = ;
       int totalPage;
       if (page != )
         pageIndex = page;
       if (rows != )
         pageSize = rows;
       MyDb db = new MyDb();
       var data = from studentInfo in db.Students where studentInfo.name.Contains(keyword) select new 
{ stuNo = studentInfo.stuNo, name = studentInfo.name, age = studentInfo.age, gradName = studentInfo.grad.gradName };
       //var data = from studentInfo in db.Students where studentInfo.name.Contains(keyword) select studentInfo;
       totalPage = data.Count() % pageSize == ? data.Count() / pageSize : data.Count() / pageSize + ;
       if (pageIndex > totalPage)
         pageIndex = totalPage;
       else if (pageIndex < )
         pageIndex = ;
       //var dt = DataList<object>.Create(data.OrderBy(r => r.stuNo), new StudentsInfo(), pageIndex, pageSize).Value;
       object dt=null ;
       if(data.Count()>)
       dt= DataList<object>.Create(data.OrderBy(r => r.stuNo),
         new { stuNo = , name = "", age = , gradName = "" }, pageIndex, pageSize).Value;
       WebApplication.DataEntity result = new WebApplication.DataEntity();
       result.total = data.Count();
       result.rows = dt;
       return result;
     }

<div id="addBox" class="easyui-dialog" data-options="closed:true,title:'新学生注册',modal:true" style="width: px; height: px">
       <table class="auto-style">
         <tr>
           <td>学生姓名：</td>
           <td>
             <input id="stuname" class=" easyui-textbox" data-options="required:true,missingMessage:'必填项！',validType:'email',invalidMessage:'email格式不正确！'" type="text" /></td>
         </tr>
         <tr>
           <td>班级： </td>
           <td>
             <input class="easyui-combobox" id="grad" name="grad"
               data-options="valueField:'id',textField:'gradName',required:true,missingMessage:'必填项！'" /></td>
         </tr>
         <tr>
           <td>
             <input id="saveBtn" onclick="saveClick()" type="button" value="保存" /></td>
           <td>
             <input id="Button" type="button" onclick="$('#addBox').dialog('close');" value="关闭" /></td>
         </tr>
       </table>
     </div>